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Message-ID: <20090814183758.GA21197@boeing.com> Date: Fri, 14 Aug 2009 11:37:58 -0700 From: Tom Goff <thomas.goff@...ing.com> To: netdev@...r.kernel.org Subject: [PATCH] gre: Fix MTU calculation for bound GRE tunnels The GRE header length should be subtracted when the tunnel MTU is calculated. This just corrects for the associativity change introduced by commit 42aa916265d740d66ac1f17290366e9494c884c2. Signed-off-by: Tom Goff <thomas.goff@...ing.com> --- net/ipv4/ip_gre.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index cb4a0f4..82c11dd 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -951,7 +951,7 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev) addend += 4; } dev->needed_headroom = addend + hlen; - mtu -= dev->hard_header_len - addend; + mtu -= dev->hard_header_len + addend; if (mtu < 68) mtu = 68; -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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